Collaborative Research: Fireworks at the Ballet: Globular Cluster Formation, Bulge Dynamics and the Role of Central Black Holes in Galaxy Mergers

合作研究：芭蕾舞中的烟花：球状星团的形成、核球动力学以及中央黑洞在星系合并中的作用

• 批准号: 0307200
• 负责人: Zoltan Haiman
• 金额: $ 4.8万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-15 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0307200&HistoricalAwards=false
• 关键词: Collaborative; Research; Fireworks; Ballet; Globular

AST-0307200HaimanGalaxy collisions and mergers are the most spectacular events in the hierarchical formation of galaxies. Two aspects of these collisions will be studied here. Firstly, the observation of apparently young globular cluster (GC) candidates in colliding galaxies suggests that GC formation may occur in all galaxy collisions. High-resolution simulations will be performed to study this formation, using up to a million particles to follow dark matter, gas, and stars. Secondly, these high-resolution simulations will be used to calibrate a larger parameter study at lower resolution to address the origin of the astonishingly tight relationship between spheroid velocity dispersion and the mass of the central super-massive black hole. The main focus will be on factors determining the change of velocity dispersion during galaxy collisions. This research will inform the new Space Show currently under development at the Hayden Planetarium of the American Museum of Natural History, which will include a segment on galaxy collisions. Some work will be carried out in an international collaboration with Germany, and some will support the dissertation of a female graduate student.

AST-0307200海曼星系碰撞和合并是星系分级形成中最壮观的事件。这里将研究这些碰撞的两个方面。首先，在碰撞星系中观测到的明显年轻的球状星团（GC）候选者表明，GC的形成可能发生在所有的星系碰撞。 将进行高分辨率模拟来研究这种形成，使用多达一百万个粒子来跟踪暗物质，气体和恒星。 其次，这些高分辨率的模拟将用于校准较低分辨率下的较大参数研究，以解决球体速度色散与中心超大质量黑洞质量之间惊人紧密关系的起源。 主要重点将放在决定星系碰撞期间速度分散变化的因素上。 这项研究将为美国自然历史博物馆海登天文馆目前正在开发的新太空展提供信息，其中将包括一个关于星系碰撞的部分。 有些工作将通过与德国的国际合作进行，有些工作将支持一名女研究生的论文。